publication . Article . 2002

Water/magma interaction: some theory and experiments on peperite formation

Kenneth H. Wohletz;
Open Access
  • Published: 01 May 2002 Journal: Journal of Volcanology and Geothermal Research, volume 114, pages 19-35 (issn: 0377-0273, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Experiments, using molten thermite as a magma analog, produce peperite when the melt interacts with wet sand. These experiments also show explosive behavior, developing Strombolian- and Surtseyan-like bursts. The results demonstrate that the application of fuel–coolant interaction (FCI) theory is appropriate for interpretation of peperites. The theory described includes discussion of the importance of mass interaction ratios of wet sediment and magma (Rs), which determine thermal equilibrium temperature limits and contact interface dynamics. The dynamics of the interface between magma and wet sediments involves heat transfer over a wide range of rates from passi...
Subjects
free text keywords: Peperite, Convective heat transfer, Quenching, Heat transfer, Explosive eruption, Explosive material, Geology, Petrology, Fragmentation (computing), Magma, Mineralogy
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